Hydrocarbon lighting apparatus.



No. 623,079. Patented July 4, |899.'

n. L. DURAN.

HYDROCABBGN LIGHTING APPARATUS.

(Application led um'. 22, 189B.) l (No Model.) 2 Sheets-.Sheet l.

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- B. L. DURAN.

HY-DROCARBON LIGHTING APPRATUS.

(Applicatiomled Hur. 22, 189B.)

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UNITED STATES PATENT OFFICE.

ROBERT L. DORAN, OE NASHVILLE, TENNESSEE.

HYDROCARBON LIGHTING APPARATUS.

SPECIFICATION formingpart of Letters Patent No. 628,079, dated July 4, 1899.

Application fled March 22; Serial N0- 674,746 (N0 model.)

To all whom it may concern:

Be it known that I, ROBERT L. DORAN, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful Improvements in Hydrocarbon Lighting Apparatus; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make and use the same.

My invention relates to lighting apparatus employing hydrocarbons for fuel; and the improvement consists in certain means and devices for preheating and feeding the fuel to the burners, as will be fully described hereinafter.

The objects of myinvention are, first, to produce a hydrocarbon-lamp that shall be capable of producing a brilliant white light with small consumption of fuel; second, to provide means for heating,vaporizing, and mixing the oil with air before it is admitted to the burner,

and, third, to provide an auxiliary heating device or generator that shall normally keep the oil in the main generator at a suitable temperature for lighting when the lights are not in use. I accomplish these objects by means of the devices shown in the drawings, in which similar figures of reference designate similar parts in the several views.

Figure l is an elevation of the improved lamp. Fig. 2 is a similar view, enlarged,witl1 the casing of the mixing-tube removed. Fig. 3 is an enlarged side view of the same, partly in section, the section being taken on the line Fig. 4L is an elevation of a oneburner light, showing a generator adapted thereto. Fig. 5 is a side view of the same.

The main supply or generator pipe 1,through which the oil-supply is fed under pressure to the lamp, passes near the burner 2,which may be of any usual incandescent type, and terminates in an atomizing-valve 3, which can be regulated to deliver a ne spray of vapor into the opening of the air-mixing chamber 4.

An auxiliary pipe l, which takes its supply of oil from the pipe l or other suitable source,

Vpasses along pipe 1 and, returning under itself, terminates in aseries of holes or burners 5, located'beneath pipe l and beneath its own intermediate portion.

The vaporized oil discharged from the atomizing-valve 3 is received by the mixing tube or chamber 4 and is thence delivered to the burner 2, which is preferably provided with a gauze cover or'screen, above which the oilvapor is burned. In practice I prefer to cover the flame above the burner with an incandescent mantle of suitable form for intensifying the light.

The operation of my invention is asfollows: Oil is admitted'to pipe la by a valve or other means and is ignited upon reaching the burners 5. The iiame thus produced heats the partof pipe 12t above the burners, and the oil thus heated upon reaching the burners produces a still hotter flame. This flame is preferably small and is designed to act as a continuous heater or generator for the main supply-pipe 1. When it is desired to light the lamp, the valve of the main supply-pipe is opened, and the oil thus admitted to the main generator flows through the pipeabove the continuous-generator iiame and is heated. The oil then flows to the atomiZing-valve 3, from which it is ejected in the form of heated vapor or spray. This vapor entering the mixing-chamber 4 becomes mixed with a portion of atmospheric air, and the mixture of oil and air discharges through the gauze cover of the burne'r 2 under the mantle,where it is ignited by the flame of the continuous generator.

The intensity of the flame and the brilliancy of the light may be closely regulated by the atomizingvalve, which may be of any approved style, but is preferably a needle-valve of fine pitch.

In lamps of the kinddescribed it is essential that suitable means be provided for easily and quickly lighting the lamp. I accomplish this purpose by means of the continuous generator above described, which keeps the oil in the main generator at a temperature sufficiently high to insure its atomizing readily by passing through the atomizing-valve when the main supply is turned on, and thus producing a heated mixture of oil-vapor and air that is readily ignited by contact with the lameof the continuous generator, thus lighting the lamps automatically.

By bending the continuous-generator pipe 1a underneath itself and locating the burners in its lower part, as shown in Figs. 2, 3, 4,

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and 5, the dame of these burners not only heats the oil supplied to the atomiZiug-valve by the main pipe l, but also heats its own supply in the bend of pipe liL above the burner, generating the necessary heat from a very small quantity of oil.

The continuous heater or generator above described, by which the main oil-supply for the lamp may be continually kept at the desired temperature and by which the main burner may be automatically lighted, forms an essential feature of my invention,and this I desire to secure byLetters Patent. I do not desire to contine my invention to the particular form of continuous generator shown, as I consider the details of its construction immaterial, it being only essential to the spirit of my invention that the main oil-supply of the lamp be continuously heated by an auxiliary heater or generator placed beneath the main supply-pipe of the lamp andadapted to heat not only the main pipe, but the auxiliary supply-pipe also when the lamp itself is not lighted.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a hydrocarbon lighting apparatus, the combination of a mixing-chamber having au open end, a burner communicating with said mixing-chamber, a main vapor-generator pipe having connected therewith an atomizingvalve arranged to discharge into the open end of the mixing-chamber, and an auxiliary vapor-generator pipe having a portion bent on itself and provided with burners for heating both the main generator-pipe and auxiliary generator-pipe, substantially as described.

2. In ahydrocarbon lightingapparatus, the combination of a mixing-chamber having an open end, burners communicating with said mixing-chamber, mantles for said burners, a main vapor-generator pipe extended between the mantles and provided with an atomizingvalve arranged to discharge into the open end of the mixing-chamber, and an auxiliary vapor-generator pipe having a portion bent on itself adjacent to the main generator-.pipe and provided with burners for heating both generator-pipes, substantially as described.

In testimony whereof I afx my signature in presence of two witnesses.

ROBERT L. DURAN.

Witnesses:

S. RAY FRALICK, HERBERT A. WHITNEY. 

